ThreatAnalyzer.cs

using Microsoft.ML;
using Microsoft.ML.Data;
using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.Extensions.Caching.Memory;

namespace ArtemisSecurity
{
    public class ThreatAnalyzer
    {
        private readonly MLContext mlContext;
        private ITransformer trainedModel;
        private PredictionEngine<ThreatData, ThreatPrediction> predictionEngine;
        private readonly IMemoryCache modelCache;

        public ThreatAnalyzer(IMemoryCache cache)
        {
            mlContext = new MLContext(seed: 0);
            modelCache = cache;
        }

        public async Task InitializeAsync()
        {
            await TrainModelAsync();
        }

        public void PreformVisualAnalysis()
        {
            ArtemisVision.CaptureAndAnalyzeScreen();
        }

        private async Task TrainModelAsync()
        {
            if (!modelCache.TryGetValue("TrainedModel", out trainedModel))
            {
                var dataPath = Path.Combine(Environment.CurrentDirectory, "threat_data.csv");
                var dataView = mlContext.Data.LoadFromTextFile<ThreatData>(dataPath, separatorChar: ',', hasHeader: true);

                var dataPipeline = mlContext.Transforms.Conversion.MapValueToKey("ThreatType", nameof(ThreatData.ThreatType))
                    .Append(mlContext.Transforms.Categorical.OneHotEncoding("ThreatTypeEncoded", "ThreatType"))
                    .Append(mlContext.Transforms.Concatenate("Features", "ThreatLevel", "ThreatTypeEncoded"))
                    .Append(mlContext.Transforms.NormalizeMinMax("Features"))
                    .Append(mlContext.BinaryClassification.Trainers.SdcaLogisticRegression(labelColumnName: nameof(ThreatData.IsCritical), featureColumnName: "Features"));

                trainedModel = await Task.Run(() => dataPipeline.Fit(dataView));
                modelCache.Set("TrainedModel", trainedModel, TimeSpan.FromHours(24));
            }

            predictionEngine = mlContext.Model.CreatePredictionEngine<ThreatData, ThreatPrediction>(trainedModel);
        }

        public async Task LogAndAnalyzeThreat(string threatName, float threatLevel)
        {
            if (predictionEngine == null)
            {
                await InitializeAsync();
            }

            var prediction = PredictThreat(threatName, threatLevel);

            if (prediction.PredictedIsCritical)
            {
                Console.WriteLine($"Critical threat detected: {threatName}. Taking action.");
                ImplementAdvancedProtection(threatName, threatLevel);
            }
            else
            {
                Console.WriteLine($"Potential threat detected: {threatName}. Monitoring and learning.");
                LearnFromThreat(threatName, threatLevel);
            }
        }

        private void LearnFromThreat(string threatName, float threatLevel)
        {
            Console.WriteLine($"Learning from threat: {threatName}, Level: {threatLevel}");
            
            // Update the threat model
            UpdateThreatModel(threatName, threatLevel);
    
            // Check for similar window titles
            DetectSimilarWindows(threatName);
        }

        private void UpdateThreatModel(string threatName, float threatLevel)
        {
            // Add or update the threat in the model
            var threatData = new ThreatData
            {
                ThreatLevel = threatLevel,
                ThreatType = threatName,
                IsCritical = threatLevel > 0.5f
            };

            // Update the CSV file
            string csvPath = Path.Combine(Environment.CurrentDirectory, "threat_data.csv");
            using (var writer = new StreamWriter(csvPath, true))
            {
                writer.WriteLine($"{threatData.ThreatLevel},{threatData.ThreatType},{threatData.IsCritical}");
            }

            // Retrain the model
            TrainModelAsync().Wait();
        }

        private void DetectSimilarWindows(string threatName)
        {
            var similarWindows = ProcessMonitor.GetSimilarWindowTitles(threatName);
            foreach (var window in similarWindows)
            {
                Console.WriteLine($"Potential RE tool detected: {window}");
                UpdateThreatModel(window, 0.8f); // Consider similar windows as high threats
            }
        }

        public List<(string Name, float Level)> MonitorAndLogProcesses()
        {
            var detectedThreats = new List<(string Name, float Level)>();
            bool detected = ProcessMonitor.DetectBlacklistedProcesses(this, detectedThreats);

            if (!detected)
            {
                Console.WriteLine("No blacklisted processes detected.");
            }

            return detectedThreats;
        }


        private void ImplementAdvancedProtection(string threatName, float threatLevel)
        {
            LogThreatDetails(threatName, threatLevel);
            IsolateAffectedSystems();
            BlockMaliciousIPs();
            UpdateFirewallRules();
            ScanForVulnerabilities();
            ApplySecurityPatches();
            NotifySecurityTeam(threatName, threatLevel);
            InitiateDataBackup();
            MonitorSystemActivities();

            Console.WriteLine("Advanced protection measures implemented.");
        }

        private void LogThreatDetails(string threatName, float threatLevel)
        {
            Console.WriteLine($"Logging threat details - Name: {threatName}, Level: {threatLevel}");
            // Implement actual logging mechanism (e.g., to a file or database)
        }

        private void IsolateAffectedSystems()
        {
            Console.WriteLine("Isolating affected systems...");
            // Implement system isolation logic
        }

        private void BlockMaliciousIPs()
        {
            Console.WriteLine("Blocking malicious IP addresses...");
            // Implement IP blocking logic
        }

        private void UpdateFirewallRules()
        {
            Console.WriteLine("Updating firewall rules...");
            // Implement firewall rule updates
        }

        private void ScanForVulnerabilities()
        {
            Console.WriteLine("Scanning for vulnerabilities...");
            // Implement vulnerability scanning
        }

        private void ApplySecurityPatches()
        {
            Console.WriteLine("Applying security patches...");
            // Implement security patching
        }

        private void NotifySecurityTeam(string threatName, float threatLevel)
        {
            Console.WriteLine($"Notifying security team about the threat: {threatName}, Level: {threatLevel}");
            // Implement security team notification
        }

        private void InitiateDataBackup()
        {
            Console.WriteLine("Initiating data backup...");
            // Implement data backup initiation
        }

        private void MonitorSystemActivities()
        {
            Console.WriteLine("Monitoring system activities...");
            // Implement system activity monitoring
        }

        private ThreatPrediction PredictThreat(string threatName, float threatLevel)
        {
            if (predictionEngine == null)
            {
                throw new InvalidOperationException("Prediction engine is not initialized. Call InitializeAsync() before making predictions.");
            }

            var threatData = new ThreatData
            {
                ThreatLevel = threatLevel,
                ThreatType = threatName
            };

            return predictionEngine.Predict(threatData);
        }
    }

    public class ThreatData
    {
        [LoadColumn(0)]
        public float ThreatLevel { get; set; }

        [LoadColumn(1)]
        public string ThreatType { get; set; }

        [LoadColumn(2)]
        public bool IsCritical { get; set; }
    }

    public class ThreatPrediction
    {
        [ColumnName("PredictedLabel")]
        public bool PredictedIsCritical { get; set; }
    }
}